<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索视图 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            :clearable="true"
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="6">
          <el-button type="primary" @click="addUserDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表视图 -->
      <el-table :data="userList" stripe border>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="username" label="姓名"> </el-table-column>
        <el-table-column prop="email" label="邮箱"> </el-table-column>
        <el-table-column prop="mobile" label="电话"> </el-table-column>
        <el-table-column prop="role_name" label="角色"> </el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽的使用 -->
          <template slot-scope="scope">
            <!-- 双向绑定 -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="updateUserState(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditUserInfoDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteUserById(scope.row.id)"
            ></el-button>
            <!-- 分配权限按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="showSetRoleDialog(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addUserDialogVisible"
      width="50%"
      @close="addDialogClose"
    >
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addUserDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editUserDialogVisible"
      width="50%"
      @close="editDialogClose"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="100px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editUserDialogVisible = false">取 消</el-button>
        <el-button @click="editUser" type="primary">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 为用户分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleVisible"
      width="50%"
      @close="closeSetRoleDialog"
    >
      <div>
        <p>当前的用户：{{ user.username }}</p>
        <p>当前的角色：{{ user.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择新角色">
            <el-option
              v-for="item in roleList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleVisible = false">取 消</el-button>
        <el-button type="primary" @click="setRole">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  created() {
    this.getUserList();
  },
  data() {
    // 验证邮箱的自定义规则
    var checkEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        return callback();
      }
      return callback(new Error("请输入合法的邮箱"));
    };

    // 验证手机号的自定义规则
    var checkMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        return callback();
      }
      return callback(new Error("请输入合法的手机号"));
    };

    return {
      // 获取用户信息所需的参数数据
      queryInfo: {
        // 查询关键字
        query: "",
        pagenum: 1,
        pagesize: 2,
      },
      // 用户列表
      userList: [],
      // 用户记录总条数
      total: 0,
      // 用于控制添加用户对话框显示或隐藏
      addUserDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加用户表单规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 16,
            message: "长度在 6 到 16 个字符",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          {
            validator: checkEmail,
            trigger: "blur",
          },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          {
            validator: checkMobile,
            trigger: "blur",
          },
        ],
      },
      // 用于控制修改用户对话框显示或隐藏
      editUserDialogVisible: false,
      // 修改用户表单数据
      editForm: {},
      // 修改用户表单规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          {
            validator: checkEmail,
            trigger: "blur",
          },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          {
            validator: checkMobile,
            trigger: "blur",
          },
        ],
      },
      // 用于控制分配角色对话框显示或隐藏
      setRoleVisible: false,
      // 表示当前需要分配角色的用户
      user: {},
      // 角色列表
      roleList: [],
      // 已选中的角色id值
      selectRoleId: "",
    };
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表错误！");
      }
      this.total = res.data.total;
      this.userList = res.data.users;
    },
    // 当pageSize改变时调用
    handleSizeChange(newPageSize) {
      //   console.log(newPageSize);
      this.queryInfo.pagesize = newPageSize;
      this.getUserList();
    },
    // 当currentPage改变时调用
    handleCurrentChange(newPage) {
      //   console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 更新用户状态
    async updateUserState(userInfo) {
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        this.$message.error("更新用户状态出错！");
      }
      this.$message.success("更新用户状态成功！");
    },
    // 添加用户对话框关闭时调用的函数，用于清空表单
    addDialogClose() {
      this.$refs.addFormRef.resetFields();
    },
    // 单击确定按钮，添加用户
    addUser() {
      // 首先进行预验证
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return;
        }
        // 发送ajax请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          return this.$message.error("添加用户失败！");
        }
        this.$message.success("添加用户成功！");
        this.addUserDialogVisible = false;
        this.getUserList();
      });
    },
    // 显示修改用户信息对话框
    async showEditUserInfoDialog(id) {
      // 根据id查询用户信息
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户信息失败！");
      }
      this.editForm = res.data;
      this.editUserDialogVisible = true;
    },
    // 修改用户对话框关闭时调用的函数，用于清空表单
    editDialogClose() {
      this.$refs.editFormRef.resetFields();
    },
    // 单击确定按钮，修改用户
    editUser() {
      // 首先进行预验证
      this.$refs.editFormRef.validate(async (valid) => {
        console.log(valid);
        if (!valid) {
          return;
        }
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile,
          }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("修改用户信息失败！");
        }

        // 关闭修改用户信息对话框
        this.editUserDialogVisible = false;

        this.getUserList();

        this.$message.success("修改用户信息成功！");
      });
    },
    // 根据id删除用户
    deleteUserById(id) {
      this.$confirm("此操作将永久删除该用户, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const { data: res } = await this.$http.delete("users/" + id);

          if (res.meta.status !== 200) {
            return this.$message.error("删除失败！");
          }

          this.$message({
            type: "success",
            message: "删除成功!",
          });

          this.getUserList();
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    // 显示分配角色对话框
    async showSetRoleDialog(user) {
      this.setRoleVisible = true;
      this.user = user;
      // 发送ajax请求，得到所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$messgae.error("获取角色列表失败！");
      }
      this.roleList = res.data;
    },
    // 单击按钮，分配角色
    async setRole() {
      if (!this.selectRoleId) {
        return this.$message.error("请先选择分配的角色！");
      }

      const { data: res } = await this.$http.put(`users/${this.user.id}/role`, {
        rid: this.selectRoleId,
      });

      if (res.meta.status !== 200) {
        return this.$message.error("分配角色失败！");
      }

      this.$message.success("分配角色成功！");

      this.setRoleVisible = false;

      this.getUserList();
    },
    // 关闭分配用户对话框时的处理函数
    closeSetRoleDialog() {
      this.selectRoleId = "";
      this.user = {};
    },
  },
};
</script>

<style>
</style>